Limit pin disassembler for power grid

Abstract

The present invention provides a limit pin disassembler for a power grid, which belongs to the technical field of limit pin replacement, and includes: a positioning assembly, a mounting plate, a connecting shaft, a mounting sleeve, at least one clamping claw and a tightening sleeve. The connecting shaft is threadedly connected to the mounting plate; an annular groove is provided at the end of the connecting shaft located on the inner side of the connecting seat. The mounting sleeve is rotatably arranged in the annular groove. At least one clamping claw is connected to the mounting sleeve, and the clamping claw is used to clamp the limit pin; the clamping claw is used to pull the limit pin out of the connecting seat with the help of the thread force of the connecting shaft and the mounting plate. The tightening sleeve is used to be sleeved on the limit pin during installation to shrink and deform the limit pin, and to disconnect after the limit pin reaches a specific position of the connecting seat to reset the limit pin. The limit pin disassembler for a power grid provided by the present invention can realize the installation and removal of the limit pin only through the connecting shaft and related components, and the entire replacement process requires a short time, the structure of the device is relatively simple, and the limit pin is prevented from slipping to a certain extent.

Description

Technical Field

[0001] The invention belongs to the technical field of limit pin replacement, and more specifically, relates to a limit pin disassembler for a power grid. Background Art

[0002] Transmission lines are an important part of the power system. They can transmit the output power of power plants to thousands of households. Insulators are essential components in transmission lines, which are used to connect conductors to towers to increase creepage distance.

[0003] During the installation of the insulator string, the hook of the insulator string needs to be installed on the connecting seat of the pole body through the limit pin. In actual operation, the worker needs to use the operating lever to install and remove the limit pin. However, the operating space on the pole body is limited, resulting in low efficiency and long time required for the installation and removal of the limit pin. In addition, the limit pin may slip after a period of use, causing major safety accidents and property losses. Summary of the invention

[0004] The object of the present invention is to provide a limit pin disassembler for a power grid, aiming to solve the problems that the installation and disassembly of the limit pin are both low in efficiency, require a long time and may slip.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: to provide a limit pin disassembler for a power grid, comprising:

[0006] A positioning assembly, used for fixing on the connecting seat;

[0007] A mounting plate connected to the positioning assembly and used for positioning on one side of the connecting seat;

[0008] A connecting shaft is threadedly connected to the mounting plate; an annular groove is formed at the end of the connecting shaft located inside the connecting seat;

[0009] A mounting sleeve, rotatably disposed in the annular groove;

[0010] At least one claw connected to the mounting sleeve, the claw being used to engage the limit pin; the claw is used to pull the limit pin out of the connecting seat by means of the thread force of the connecting shaft and the mounting plate;

[0011] The tightening sleeve is used to be sleeved on the limit pin during installation to make the limit pin shrink and deform, and to be disconnected after the limit pin reaches a specific position of the connecting seat to reset the limit pin.

[0012] In one possible implementation, the positioning assembly includes a first limiting column and a second limiting column, wherein the first limiting column is fixed at the bottom of the connecting seat for plugging and mating with the mounting plate, and the second limiting column passes through the mounting plate and is threadedly connected to the top of the connecting seat.

[0013] In a possible implementation, two extension plates are provided at both ends of the mounting plate, and the two extension plates are respectively provided with limiting holes that are slidably matched with the first limiting column and the second limiting column.

[0014] In a possible implementation manner, the length direction of the limiting hole is parallel to the axial direction of the connecting shaft.

[0015] In a possible implementation manner, the mounting plate and the two extension plates are formed integrally.

[0016] In a possible implementation, a limit rod is fixed on the mounting sleeve, and the limit rod abuts against the limit pin and is used to prevent the limit pin from slipping with the help of the positioning assembly.

[0017] In a possible implementation, there are two clamping claws, and both of the two clamping claws are provided with a through hole for clamping a limit pin.

[0018] In a possible implementation, a rocker arm is connected between the clamping claw and the mounting sleeve, one end of the rocker arm is hinged to the mounting sleeve, and the other end is fixed to the clamping claw, and the two clamping claws are respectively used to clamp onto the bent portions of the limiting pin.

[0019] In a possible implementation, the end of the connecting shaft away from the mounting sleeve is connected to a universal joint, and the universal joint is used to rotate the connecting shaft by means of an operating rod.

[0020] In a possible implementation, the fastening sleeve is made of a flexible material and is provided with a notch for breaking.

[0021] The beneficial effect of the limit pin disassembler for power grid provided by the present invention is that: compared with the prior art, in the limit pin disassembler for power grid provided by the present invention, the positioning assembly is fixed on the connection seat, and the mounting plate is connected to the positioning assembly. A connecting shaft is threadedly connected to the mounting plate. An annular groove is provided at the end of the connecting shaft located inside the connection seat, and the mounting sleeve is rotatably arranged in the annular groove. At least one claw is fixed on the mounting sleeve.

[0022] When the limit pin needs to be installed on the connecting seat, firstly, the clamping claw is clamped on the limit pin, and then the fastening sleeve is installed on the limit pin. Due to the existence of the fastening sleeve, the limit pin shrinks and deforms. The connecting shaft is rotated. Since the connecting shaft is threadedly connected with the mounting plate, and due to the existence of the annular groove, the mounting sleeve can rotate without following the connecting shaft. During the rotation of the connecting shaft, the clamping claw drives the limit pin into the connecting seat. When the limit pin reaches the specified position, the fastening sleeve is disconnected and the limit pin is reset to complete the installation and positioning of the limit pin.

[0023] When the lower limit pin needs to be removed, the connecting shaft is rotated in the opposite direction. The connecting shaft can pull the installation sleeve axially along the connecting shaft with the help of the annular groove, and the installation sleeve pulls the claw, and the limit pin can be taken out of the connecting seat through the claw.

[0024] In the present application, the installation and removal of the limit pin can be realized only by connecting the shaft and related components, and the entire replacement process takes a short time and the structure of the device is relatively simple. Since the relative position of the claw and the mounting plate has been determined, the limit pin is prevented from slipping to a certain extent by the claw. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic structural diagram of a limit pin disassembler for a power grid when a fastening sleeve is put on a limit pin according to an embodiment of the present invention;

[0027] Figure 2 The present invention provides a schematic structural diagram of a limit pin disassembler for a power grid when a limit pin is clamped on a hook head according to an embodiment of the present invention.

[0028] In the figure: 1. connecting seat; 2. connecting shaft; 3. mounting sleeve; 4. extension plate; 5. universal joint; 6. second limiting column; 7. first limiting column; 8. fastening sleeve; 9. hook; 10. claw; 11. limiting pin; 12. limiting rod; 13. mounting plate; 14. rocker arm. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] Please also read Figure 1 to Figure 2 , the limit pin disassembler for power grid provided by the present invention is now described. The limit pin disassembler for power grid comprises: a positioning assembly, a mounting plate 13, a connecting shaft 2, a mounting sleeve 3, at least one clamping claw 10 and a fastening sleeve 8. The positioning assembly is used to be fixed on the connecting seat 1. The mounting plate 13 is connected to the positioning assembly and is used to be positioned on one side of the connecting seat 1. The connecting shaft 2 is threadedly connected to the mounting plate 13; an annular groove is provided at the end of the connecting shaft 2 located on the inner side of the connecting seat 1. The mounting sleeve 3 is rotatably arranged in the annular groove. At least one clamping claw 10 is connected to the mounting sleeve 3, and the clamping claw 10 is used to clamp the limit pin 11; the clamping claw 10 is used to pull the limit pin 11 out of the connecting seat 1 by means of the thread force of the connecting shaft 2 and the mounting plate 13. The fastening sleeve 8 is used to be sleeved on the limit pin 11 during installation to shrink and deform the limit pin 11 and to disconnect after the limit pin 11 reaches a specific position of the connecting seat 1 to reset the limit pin 11.

[0031] The beneficial effect of the limit pin disassembler for power grid provided by the present invention is that: compared with the prior art, in the limit pin disassembler for power grid provided by the present invention, the positioning assembly is fixed on the connection seat 1, and the mounting plate 13 is connected to the positioning assembly. The connecting shaft 2 is threadedly connected to the mounting plate 13. An annular groove is provided at the end of the connecting shaft 2 located on the inner side of the connection seat 1, and the mounting sleeve 3 is rotatably arranged in the annular groove. At least one claw 10 is fixed on the mounting sleeve 3.

[0032] When the limit pin 11 needs to be installed on the connection seat 1, the clamping claw 10 is first clamped on the limit pin 11, and then the fastening sleeve 8 is installed on the limit pin 11. Due to the presence of the fastening sleeve 8, the limit pin 11 shrinks and deforms. The connecting shaft 2 is rotated. Since the connecting shaft 2 is threadedly connected with the mounting plate 13, and due to the presence of the annular groove, the mounting sleeve 3 can rotate without following the connecting shaft 2. During the rotation of the connecting shaft 2, the clamping claw 10 drives the limit pin 11 into the connection seat 1. When the limit pin 11 reaches the specified position, the fastening sleeve 8 is disconnected and the limit pin 11 is reset to complete the installation and positioning of the limit pin 11.

[0033] When the lower limit pin 11 needs to be removed, the connecting shaft 2 is rotated in the opposite direction. The connecting shaft 2 can pull the installation sleeve 3 axially along the connecting shaft 2 with the help of the annular groove. The installation sleeve 3 pulls the claw 10, and the limit pin 11 can be taken out of the connecting seat 1 through the claw 10.

[0034] Transmission lines operate in the wild environment for a long time and are affected by natural environments such as wind, frost, rain and snow. The M pins of the insulator strings are prone to rust and breakage, which seriously threatens the firmness of the insulator strings and the safe operation of the lines. This is a serious defect and needs to be dealt with in a timely manner.

[0035] Currently, there is no dedicated M-pin remover for tension insulator strings. Replacement requires equipotential operation or power outage. The equipotential operation is complicated and requires a lot of manpower and material resources. Power outage requires application for line shutdown and maintenance, which affects the normal power supply of the grid.

[0036] It has been proven through multiple field uses that the tool is easy to carry and simple to operate. Two people can arrive at the work site and quickly complete the replacement of the M pins of the tension insulator string, avoiding complicated equipotential operation or applying for line power outage for maintenance.

[0037] Transmission line insulator strings work in outdoor environments and are affected by harsh climates or industrial pollution. They may be corroded by pollutants such as sand and dust, natural hydrochloric acid, haze, acid rain, and industrial waste gas. As the operating time increases, the insulation performance decreases. To ensure the safe operation of transmission line insulator strings, preventive inspections must be carried out regularly. In addition, the insulator strings must be inspected before replacing transmission line insulator strings, hardware, and other live operations.

[0038] Due to the rapid development of ultra-high and extra-high voltage transmission lines in China, the insulator strings are long and the voltage level is high, which is no longer suitable for manual detection methods. The use of insulator robot detection is more convenient and effective, and can reduce the manpower input of insulator detection work and reduce the operation and maintenance costs of transmission lines.

[0039] In the present application, the installation and removal of the limit pin 11 can be realized only by connecting the shaft 2 and related components, and the entire replacement process takes a short time and the structure of the device is relatively simple. Since the relative position of the claw 10 and the mounting plate 13 has been determined, the limit pin 11 is prevented from slipping to a certain extent by the claw 10.

[0040] After the stop pin 11 is clamped in the hook head 9 and the connection seat 1, the position of the stop pin 11 relative to the hook head 9 and the connection seat 1 is determined. Since the operable space on the rod body is small, the stop pin 11 cannot be directly pulled out of the connection seat 1, so the stop pin 11 can only be taken out by driving the connection shaft 2 to rotate with the help of the threaded connection force between the connection shaft 2 and the mounting plate 13. However, the connection shaft 2 cannot drive the mounting sleeve 3 to rotate, but can only drive the mounting sleeve 3 to move axially.

[0041] When removing the limit pin 11, the limit pin 11 can only be pulled, and the limit pin 11 cannot be rotated, otherwise the limit pin 11 and the claw 10 will be damaged. In order to achieve the above effect, an annular groove is provided on the connecting shaft 2. After the mounting sleeve 3 is engaged with the limit pin 11 by the claw 10 and the connecting shaft 2 rotates, the mounting sleeve 3 will not rotate with the connecting shaft 2, but can only move along the axial direction of the connecting shaft 2.

[0042] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 The positioning assembly includes a first limiting column 7 and a second limiting column 6. The first limiting column 7 is fixed to the bottom of the connecting seat 1 for plugging with the mounting plate 13. The second limiting column 6 passes through the mounting plate 13 and is threadedly connected to the top of the connecting seat 1.

[0043] The mounting plate 13 is mounted on the positioning assembly, and the mounting plate 13 is positioned on the connection seat 1 by means of the positioning assembly. Since the position of the mounting plate 13 relative to the connection seat 1 has been determined, when the limit pin 11 tends to slip out of the connection seat 1, the structural strength and position stability of the mounting plate 13 itself can prevent the limit pin 11 from completely falling out, thereby ensuring the reliable connection between the insulator string and the connection seat 1.

[0044] An inner cavity is provided in the connection base 1, and an entrance opening and a limit hole are provided on the connection base 1, and both the entrance opening and the limit hole are connected to the inner cavity. During actual installation, the hook head 9 of the insulator string is inserted into the inner cavity from the entrance opening, and then the limit pin 11 is installed, so that the limit pin 11 passes through the hook head 9, and one end of the limit pin 11 is clamped on the limit hole, thereby ensuring the reliable connection of the hook head 9.

[0045] It should be particularly pointed out that the inner diameter of the entrance is relatively large, and the inner diameter of the limiting hole is relatively small, so the hook head 9 can only be taken out from the entrance. Even if the limiting pin 11 in the connection seat 1 does not slip off, but its own structure has been damaged, the restriction of the mounting plate 13 can prevent the hook head 9 from slipping off from the inner cavity of the connection seat 1, thereby avoiding the problem of connection failure between the insulator string and the connection seat 1.

[0046] In order to stably limit the mounting plate 13, the first limiting column 7 and the second limiting column 6 are distributed on both sides of the connecting seat 1, and the first limiting column 7 can be directly fixed to the bottom of the connecting seat 1. During installation, one side of the mounting plate 13 is first plugged into the first limiting column 7, and the other side of the mounting plate 13 is positioned by threading the second limiting column 6 with the connecting seat 1. Through the above arrangement, the mounting plate 13 is effectively and accurately limited, and disassembly is relatively convenient.

[0047] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 Two extension plates 4 are provided at both ends of the mounting plate 13 , and the two extension plates 4 are respectively provided with limiting holes that are slidably matched with the first limiting column 7 and the second limiting column 6 .

[0048] During the actual installation, the accurate movement direction of the limit pin 11 needs to be ensured so that the limit pin 11 can successfully pass through the hook head 9. Before inserting the limit pin 11 into the hook head 9, the limit pin 11 needs to be installed on the claw 10 first, and the position of the limit pin 11 and the installation sleeve 3 will remain relatively stable through the claw 10. By arranging two extension plates 4 at both ends of the installation plate 13, the two extension plates 4 are respectively slidably matched with the first limit column 7 and the second limit column 6, and the limit pin 11 will be inserted into the hook head 9 during the sliding process of the extension plate 4.

[0049] When removing the limit pin 11, rotating the connecting shaft 2 will make the mounting plate 13 abut against the connecting seat 1. With the help of the force of the connecting seat 1 on the mounting plate 13, the limit pin 11 is pulled out of the connecting seat 1 by the claw 10, etc. After the limit pin 11 is pulled out, the second limit column 6 is removed, and the mounting plate 13 and the extension plate 4 can be removed from the connecting seat 1.

[0050] In some embodiments of the limit pin disassembler for a power grid provided in the present application, the length direction of the limit hole is parallel to the axial direction of the connecting shaft 2 .

[0051] By limiting the length direction of the limiting hole, during the sliding cooperation between the extension plate 4 and the first limiting column 7 and the second limiting column 6, the limiting pin 11 can be ensured to move in a direction parallel to the length direction of the limiting hole, and this direction is also parallel to the axial direction of the connecting shaft 2, thereby avoiding the limiting pin 11 from being subjected to forces deviating from the axial direction and ensuring that it can be smoothly inserted into the hook head 9.

[0052] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 The mounting plate 13 and the two extension plates 4 are integrally formed.

[0053] The integral molding ensures the connection strength between the mounting plate 13 and the extension plate 4 , and the two extension plates 4 and the mounting plate 13 form a U-shaped structure that is plugged into and matched with the connection seat 1 .

[0054] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 A limit rod 12 is fixed on the mounting sleeve 3, and the limit rod 12 abuts against the limit pin 11 and is used to prevent the limit pin 11 from slipping with the help of a positioning assembly.

[0055] Due to external force or other reasons, the limit pin 11 may slip out of the hook head 9. Although the claw 10 is mounted on the limit pin 11, the limit pin 11 can move a certain distance relative to the claw 10 under the action of external force, which makes the claw 10 unable to effectively prevent the movement of the limit pin 11.

[0056] Based on the above situation, a limit rod 12 is fixed on the mounting sleeve 3, one end of the limit rod 12 is fixed on the mounting sleeve 3, and the other end extends to the outside of the claw 10 and abuts against the middle of the limit pin 11. For a more detailed description, the limit pin 11 can be regarded as an M pin at this time, the claw 10 is connected to the top of the M pin, and there is also a bending point in the middle of the M pin, and the free end of the limit rod 12 abuts against the bending point.

[0057] When the limit pin 11 tends to slip, it will squeeze the limit rod 12 and the claw 10. Since the position of the limit rod 12 is already determined, the failure of the connection of the limit pin 11 is avoided, so that the limit pin 11 always remains relatively still with the hook head 9.

[0058] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 There are two clamping claws 10 , and both clamping claws 10 are provided with through holes for clamping the limiting pin 11 .

[0059] Usually, the limit pin 11 used for installing the insulator string is an M pin. Since the M pin has three bends, before installing the M pin, the M pin needs to be clamped on the two claws 10. The specific operation is to make the M pin pass through the through holes opened on the two claws 10, and ensure that the two claws 10 are respectively clamped at the two bends at the top of the M pin.

[0060] After the clamping claw 10 has fixed the limit pin 11 , the position of the limit pin 11 can be moved with the help of the connecting shaft 2 etc. to complete the installation of the limit pin 11 .

[0061] Since the M pin has two bending points at the top and one bending point in the middle, when disassembling, the two card owners can pull the two bending points of the M pin at the same time, and the M pin can be taken out from the connecting seat 1 under the action of the connecting shaft 2.

[0062] It should be noted that after the M pin is successfully installed on the hook head 9, the claw 10 always remains in a clamping state with the M pin, so as to facilitate subsequent replacement.

[0063] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 A swing rod 14 is connected between the clamping claw 10 and the mounting sleeve 3. One end of the swing rod 14 is hinged on the mounting sleeve 3, and the other end is fixed on the clamping claw 10. The two clamping claws 10 are respectively used to clamp on the bending part of the limit pin.

[0064] When the limit pin 11 is an M pin, the top of the M pin has two bending points. When the number of the claw 10 is one, in order to make the claw 10 engage at the bending point on the top of the M pin, one end of the M pin needs to be inserted into the claw 10, and then the M pin needs to be slid until the bending point of the M pin moves to the claw 10. However, at this time, one claw 10 may not be able to effectively remove the M pin from the hook head 9.

[0065] When there are two clamping claws 10 and both are fixed on the mounting sleeve 3, the position between the two clamping claws 10 is relatively determined, which makes it very difficult to clamp both clamping claws 10 at the bending point of the M pin.

[0066] In order to solve the above problem, a rocker arm 14 is arranged between the claw 10 and the mounting sleeve 3. One end of the rocker arm 14 is hinged on the mounting sleeve 3, and the other end is fixed on the claw 10. The rocker arm 14 drives the claw 10 to swing within a certain range, thereby facilitating the clamping of the M pin.

[0067] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 and Figure 2 The end of the connecting shaft 2 away from the mounting sleeve 3 is connected with a universal joint 5, and the universal joint 5 is used to rotate the connecting shaft 2 by means of an operating rod.

[0068] In actual operation, a worker needs to stand on the operating platform and hold the operating lever to rotate the connecting shaft 2. However, due to the small space on the operating platform, the worker can only stand at a position that deviates from the axial direction of the connecting shaft 2 by a certain angle, and the straight rod cannot effectively rotate the connecting shaft 2.

[0069] In order to solve the above problem, a universal joint 5 is installed on the connecting shaft 2, and the worker only needs to connect the operating rod with the universal joint 5, and then rotate the operating rod to rotate the connecting shaft 2. The rotation of the connecting shaft 2 can remove the limit pin 11 from the connecting seat 1.

[0070] For the convenience of operation, when the limit pin 11 needs to be installed, an auxiliary rod can be fixed on the mounting plate 13. The mounting plate 13 is moved through the auxiliary rod so that the limit pin 11 compressed and deformed by the fastening sleeve 8 is inserted into the connecting seat 1. The operating rod is turned to make the limit pin 11 stay at the specified position, and then the auxiliary rod and the operating rod are removed to complete the installation.

[0071] In some embodiments of the limit pin disassembler for power grid provided in this application, please refer to Figure 1 The fastening sleeve 8 is made of a flexible material and is provided with a notch for disconnection.

[0072] The limit pin 11 itself has a certain degree of bending and deformation. In the free state, the limit pin 11 is in an unfolded state, but this state cannot make the limit pin 11 smoothly installed. For this reason, before the limit pin 11 is inserted into the connecting seat 1, a fastening sleeve 8 can be installed on the limit pin 11. The fastening sleeve 8 can shrink and deform the limit pin 11, so that the limit pin 11 can be inserted into the hook head 9.

[0073] However, usually without any external force, the retracted stop pin 11 still cannot be effectively inserted into the hook 9 in the connection seat 1, and pass through the outlet on the other side of the connection seat 1. At this time, the connection shaft 2 needs to be rotated so that the installation sleeve 3 can squeeze the stop pin 11 through the claw 10, so that the stop pin 11 can pass through the hook 9 at the end of the insulator string. When the stop pin 11 reaches the correct position, the stop pin 11 can be reset by cutting the fastening sleeve 8, and the stop of the hook 9 is completed.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A limit pin disassembler for a power grid, characterized in that: include: A positioning assembly, used for fixing on the connecting seat; A mounting plate connected to the positioning assembly and used for positioning on one side of the connecting seat; A connecting shaft is threadedly connected to the mounting plate; an annular groove is formed at the end of the connecting shaft located inside the connecting seat; A mounting sleeve, rotatably disposed in the annular groove; At least one claw connected to the mounting sleeve, the claw being used to engage the limit pin; the claw is used to pull the limit pin out of the connecting seat by means of the thread force of the connecting shaft and the mounting plate; The tightening sleeve is used to be sleeved on the limit pin during installation to shrink and deform the limit pin and to be disconnected after the limit pin reaches a specific position of the connecting seat to reset the limit pin; There are two clamping claws, and both of the two clamping claws are provided with a through hole for clamping the limit pin; A swing rod is connected between the clamping claw and the mounting sleeve, one end of the swing rod is hinged on the mounting sleeve, and the other end is fixed on the clamping claw, and the two clamping claws are respectively used to clamp on the bending part of the limit pin; A limit rod is fixed on the mounting sleeve, and the limit rod abuts against the limit pin and is used to prevent the limit pin from slipping with the help of the positioning assembly.

2. The limit pin disassembler for power grid according to claim 1, characterized in that: The positioning assembly includes a first limiting column and a second limiting column. The first limiting column is fixed to the bottom of the connecting seat for plugging with the mounting plate, and the second limiting column passes through the mounting plate and is threadedly connected to the top of the connecting seat.

3. The limit pin disassembler for power grid according to claim 2, characterized in that: Two extension plates are provided at both ends of the mounting plate, and the two extension plates are respectively provided with limiting holes that are slidably matched with the first limiting column and the second limiting column.

4. The limit pin disassembler for power grid according to claim 3, characterized in that: The length direction of the limiting hole is parallel to the axial direction of the connecting shaft.

5. The limit pin disassembler for power grid according to claim 3, characterized in that: The mounting plate and the two extension plates are integrally formed.

6. The limit pin disassembler for power grid according to claim 1, characterized in that: The end of the connecting shaft away from the mounting sleeve is connected with a universal joint, and the universal joint is used to rotate the connecting shaft by means of an operating rod.

7. The limit pin disassembler for a power grid according to claim 1, characterized in that: The fastening sleeve is made of a flexible material and is provided with a notch for disconnection.

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